ATTA ELAHI; MUMTAZ UL ISLAM; MEHREEN IMRAN; AMJID NASEER; TAHIR ALI KHAN; SAJID HUSSAIN. EFFECT OF PREPOLYMERIZED ZIRCONIUM REINFORCED COMPOSITE RESIN DOUBLE MEGA INSERTS ON THE MARGINAL ADAPTATION OF RESIN BASED COMPOSITE RESTORATIONS. Pakistan Oral & Dental Journal, v. 39, n. 4, p. 386-389, 1 Jan. 2020.